diff --git a/query/struct.go b/query/struct.go
index 609eef0..3ad2159 100644
--- a/query/struct.go
+++ b/query/struct.go
@@ -36,7 +36,7 @@ type Header struct {
 	Truncated          bool   `json:"truncated," xml:"truncated," yaml:"truncated" example:"false"`
 	RecursionDesired   bool   `json:"recursionDesired," xml:"recursionDesired," yaml:"recursionDesired" example:"true"`
 	RecursionAvailable bool   `json:"recursionAvailable," xml:"recursionAvailable," yaml:"recursionAvailable" example:"true"`
-	Zero               bool   `json:"zero," xml:"zero," yaml:"zero" example:"false" example:"false"`
+	Zero               bool   `json:"zero," xml:"zero," yaml:"zero" example:"false"`
 	AuthenticatedData  bool   `json:"authenticatedData," xml:"authenticatedData," yaml:"authenticatedData" example:"false"`
 	CheckingDisabled   bool   `json:"checkingDisabled," xml:"checkingDisabled," yaml:"checkingDisabled" example:"false"`
 }